Reaction of hydroxyflavones with secondary phosphine chalcogenides in the CCl4/Et3N system: synthesis of a new family of phosphorylated flavonoids |
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| Authors: | Pavel A Volkov Nataliya N Pogodaeva Nina I Ivanova Kseniya O Khrapova Ludmila I Larina Boris G Sukhov Yurii V Gatilov Nina K Gusarova Boris A Trofimov |
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| Institution: | 1. A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russia;2. Institute of Organic Chemistry, Russian Academy of Sciences, Lavrentjev Ave. 9, 630090 Novosibirsk, Russia;3. Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia |
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| Abstract: | Flavonoids (3-hydroxy-, 3-hydroxy-4′-methoxy-, 3-hydroxy-7-methoxy-, and 5,7-dihydroxyflavones) react with secondary phosphine chalcogenides in the CCl4/Et3N redox system (50–52 °C, 3–5 h) to afford chemoselectively the corresponding chalcogenophosphinates of the hydroxyflavones in 65–82% yield. |
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| Keywords: | Hydroxyflavone Secondary phosphine chalcogenides Phosphorylation Phosphinoсhalcogenоic O-esters |
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